The effects of an ethanol extract of the plant Sophora flavescens Ait. on haemodynamics and ventricular fibrillation threshold were studied in pentobarbitone-anaesthetized dogs. It was found that intravenous injection of the extract, 120 mg/kg, caused transient but significant depression in systolic and diastolic blood pressure, heart rate, left ventricular pressure and dLVP/dtmax, as well as elevation of ventricular fibrillation threshold. These preliminary findings suggest that the ethanol extract of Sophora flavescens Ait. possesses pharmacological activities resembling those of antiarrhythmic agents, but the mechanisms of action are unclear.
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Dai et al. (1987) studied this question.
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